Home / 3,859.86-5,790.05-1,911.54

Finding the Fourth Proportional to 3,859.86, 5,790.05 and 1,911.54

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Solution

The fourth proportional to 3,859.86, 5,790.05 and 1,911.54 is: 2,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.86 : 5,790.05 = 1,911.54 : x
  2. Step 2: Convert to fraction form
    3,859.86/5,790.05 = 1,911.54/x
  3. Step 3: Cross multiply
    3,859.86x = 5,790.05 × 1,911.54
  4. Step 4: Simplify right side
    3,859.86x = 11,067,912.18
  5. Step 5: Solve for x
    x = 11,067,912.18/3,859.86
  6. Step 6: Final answer
    x = 2,867.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.